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TPS51113

更新时间： 2024-09-13 05:52:07
品牌 Logo 应用领域
德州仪器 - TI 驱动器栅极栅极驱动控制器
页数 文件大小 规格书
26页 2200K
描述
SYNCHRONOUS BUCK CONTROLLER WITH HIGH-CURRENT GATE DRIVER

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TPS51113 数据手册

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TPS51113, TPS51163  
www.ti.com ........................................................................................................................................................................................................ SLUS864–MAY 2009  
SYNCHRONOUS BUCK CONTROLLER WITH HIGH-CURRENT GATE DRIVER  
1
FEATURES  
DESCRIPTION  
•
•
•
•
•
Flexible Power Rails: 5 V to 12 V  
Reference: 800 mV ± 0.8%  
Voltage Mode Control  
The TPS51113 and TPS51163 are cost-optimized,  
feature rich, single-channel synchronous-buck  
controllers that operates from a single 4.5-V to 13.2-V  
supply and can convert an input voltage as low as  
1.5 V.  
Support Pre-biased Startup  
Programmable Overcurrent Protection with  
Low-Side RDS(on) Current Sensing  
The controller implements voltage mode control with  
a
fixed 300-kHz (TPS51113) and 600-kHz  
•
Fixed 300-kHz (TPS51113) and 600-kHz  
(TPS51163) Switching Frequency  
(TPS51163) switching frequency. The overcurrent  
(OC) protection employs the low-side RDS(on) current  
sensing and has user-programmable threshold. The  
OC threshold is set by the resistor from LDRV_OC  
pin to GND. The resistor value is read when the  
over-current programming circuit applies 10 µA of  
current to the LDRV_OC pin during the calibration  
phase of the start-up sequence.  
•
•
•
UV/OV Protections and Power Good Indicator  
Internal Soft-start  
Integrated High-Current Drivers Powered by  
VDD  
•
10-Pin 3 × 3 SON Package  
The TPS51113/TPS51163 also supports output  
pre-biased startup.  
APPLICATIONS  
•
Server and Desktop Computer Subsystem  
Power Supplies (MCH, IOCH, PCI, Termination)  
Distributed Power Supplies  
General DC-DC Converters  
The strong gate drivers with low deadtime allow for  
the utilization of larger MOSFETs to achieve higher  
efficiency. An adaptive anti-cross conduction scheme  
is used to prevent shoot-through between the power  
FETs.  
•
•
TYPICAL APPLICATION CIRCUIT  
V
OUT  
VDD  
V
C3  
IN  
D1  
TPS51113\TPS51163  
R6  
R4  
1
2
3
4
5
BOOT  
PGOOD 10  
R1  
Q1  
Q2  
C5  
R3  
SW  
VOS  
FB  
9
8
7
6
L1  
+
HDRV  
C1  
C2  
C6  
C7  
LDRV_OC COMP_EN  
R
V
R2  
BIAS  
OUT  
R5  
R
GND  
VDD  
Enable  
OC  
–
C4  
11  
UDG-08105  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
1234567...26

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